Influência do glyphosate em populações de azevém suscetível e resistente ao herbicida

Detalhes bibliográficos
Autor(a) principal: Picoli, G. J. [UNESP]
Data de Publicação: 2017
Outros Autores: Carbonari, C. A. [UNESP], Matos, A. K.A. [UNESP], Rodrigues, L. F.O.S. [UNESP], Velini, E. D. [UNESP]
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UNESP
Texto Completo: http://dx.doi.org/10.1590/S0100-83582017350100055
http://hdl.handle.net/11449/170110
Resumo: In Brazil, ryegrass (Lolium multiflorum) has been identified as resistant to glyphosate, becoming a major problem, especially in crops cultivated in the winter season. This herbicide can indirectly affect photosynthesis by inhibiting biosynthesis of many compounds. Thus, the aim of this study was to investigate the influence of glyphosate on the physiological profile of susceptible and resistant ryegrass populations to the herbicide. The experimental design was completely randomized with two treatments (720 and 1,080 g e.a. ha-1) and four replications plus control with no treatment. Two ryegrass populations were sown, one susceptible and another one resistant to glyphosate. After the treatments, evaluations were carried out at 1, 3, 7 and 28 days after application (DAA). Variables analyzed were: CO2 net assimilation rate, stomatal conductance, CO2 internal concentration, transpiration, water use efficiency and instantaneous carboxylation efficiency. The glyphosate herbicide caused irreversible damage in a susceptible population which at 28 DAA in all variables analyzed this population was already dead and it was impossible to analyze it, but it was shown that the effects of this herbicide were intensified from the third day after application. In the case of the resistant population, at 3 DAA in all variables, it suffered significant effects comparing to the control, showing that even with a high level of resistance the herbicide can affect its metabolism.
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spelling Influência do glyphosate em populações de azevém suscetível e resistente ao herbicidaInfluence of glyphosate on susceptible and resistant ryegrass populations to herbicideHerbicide resistanceLolium multiflorumPhotosynthesisIn Brazil, ryegrass (Lolium multiflorum) has been identified as resistant to glyphosate, becoming a major problem, especially in crops cultivated in the winter season. This herbicide can indirectly affect photosynthesis by inhibiting biosynthesis of many compounds. Thus, the aim of this study was to investigate the influence of glyphosate on the physiological profile of susceptible and resistant ryegrass populations to the herbicide. The experimental design was completely randomized with two treatments (720 and 1,080 g e.a. ha-1) and four replications plus control with no treatment. Two ryegrass populations were sown, one susceptible and another one resistant to glyphosate. After the treatments, evaluations were carried out at 1, 3, 7 and 28 days after application (DAA). Variables analyzed were: CO2 net assimilation rate, stomatal conductance, CO2 internal concentration, transpiration, water use efficiency and instantaneous carboxylation efficiency. The glyphosate herbicide caused irreversible damage in a susceptible population which at 28 DAA in all variables analyzed this population was already dead and it was impossible to analyze it, but it was shown that the effects of this herbicide were intensified from the third day after application. In the case of the resistant population, at 3 DAA in all variables, it suffered significant effects comparing to the control, showing that even with a high level of resistance the herbicide can affect its metabolism.Universidade Estadual Paulista Júlio de Mesquita Filho (UNESP)Universidade Estadual Paulista Júlio de Mesquita Filho (UNESP)Universidade Estadual Paulista (Unesp)Picoli, G. J. [UNESP]Carbonari, C. A. [UNESP]Matos, A. K.A. [UNESP]Rodrigues, L. F.O.S. [UNESP]Velini, E. D. [UNESP]2018-12-11T16:49:18Z2018-12-11T16:49:18Z2017-01-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://dx.doi.org/10.1590/S0100-83582017350100055Planta Daninha, v. 35.0100-8358http://hdl.handle.net/11449/17011010.1590/S0100-83582017350100055S0100-835820170001002532-s2.0-85028994845S0100-83582017000100253.pdf98554934481617020000-0003-0431-5942Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengPlanta Daninha0,365info:eu-repo/semantics/openAccess2024-01-18T06:24:35Zoai:repositorio.unesp.br:11449/170110Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T23:19:53.192792Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false
dc.title.none.fl_str_mv Influência do glyphosate em populações de azevém suscetível e resistente ao herbicida
Influence of glyphosate on susceptible and resistant ryegrass populations to herbicide
title Influência do glyphosate em populações de azevém suscetível e resistente ao herbicida
spellingShingle Influência do glyphosate em populações de azevém suscetível e resistente ao herbicida
Picoli, G. J. [UNESP]
Herbicide resistance
Lolium multiflorum
Photosynthesis
title_short Influência do glyphosate em populações de azevém suscetível e resistente ao herbicida
title_full Influência do glyphosate em populações de azevém suscetível e resistente ao herbicida
title_fullStr Influência do glyphosate em populações de azevém suscetível e resistente ao herbicida
title_full_unstemmed Influência do glyphosate em populações de azevém suscetível e resistente ao herbicida
title_sort Influência do glyphosate em populações de azevém suscetível e resistente ao herbicida
author Picoli, G. J. [UNESP]
author_facet Picoli, G. J. [UNESP]
Carbonari, C. A. [UNESP]
Matos, A. K.A. [UNESP]
Rodrigues, L. F.O.S. [UNESP]
Velini, E. D. [UNESP]
author_role author
author2 Carbonari, C. A. [UNESP]
Matos, A. K.A. [UNESP]
Rodrigues, L. F.O.S. [UNESP]
Velini, E. D. [UNESP]
author2_role author
author
author
author
dc.contributor.none.fl_str_mv Universidade Estadual Paulista (Unesp)
dc.contributor.author.fl_str_mv Picoli, G. J. [UNESP]
Carbonari, C. A. [UNESP]
Matos, A. K.A. [UNESP]
Rodrigues, L. F.O.S. [UNESP]
Velini, E. D. [UNESP]
dc.subject.por.fl_str_mv Herbicide resistance
Lolium multiflorum
Photosynthesis
topic Herbicide resistance
Lolium multiflorum
Photosynthesis
description In Brazil, ryegrass (Lolium multiflorum) has been identified as resistant to glyphosate, becoming a major problem, especially in crops cultivated in the winter season. This herbicide can indirectly affect photosynthesis by inhibiting biosynthesis of many compounds. Thus, the aim of this study was to investigate the influence of glyphosate on the physiological profile of susceptible and resistant ryegrass populations to the herbicide. The experimental design was completely randomized with two treatments (720 and 1,080 g e.a. ha-1) and four replications plus control with no treatment. Two ryegrass populations were sown, one susceptible and another one resistant to glyphosate. After the treatments, evaluations were carried out at 1, 3, 7 and 28 days after application (DAA). Variables analyzed were: CO2 net assimilation rate, stomatal conductance, CO2 internal concentration, transpiration, water use efficiency and instantaneous carboxylation efficiency. The glyphosate herbicide caused irreversible damage in a susceptible population which at 28 DAA in all variables analyzed this population was already dead and it was impossible to analyze it, but it was shown that the effects of this herbicide were intensified from the third day after application. In the case of the resistant population, at 3 DAA in all variables, it suffered significant effects comparing to the control, showing that even with a high level of resistance the herbicide can affect its metabolism.
publishDate 2017
dc.date.none.fl_str_mv 2017-01-01
2018-12-11T16:49:18Z
2018-12-11T16:49:18Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://dx.doi.org/10.1590/S0100-83582017350100055
Planta Daninha, v. 35.
0100-8358
http://hdl.handle.net/11449/170110
10.1590/S0100-83582017350100055
S0100-83582017000100253
2-s2.0-85028994845
S0100-83582017000100253.pdf
9855493448161702
0000-0003-0431-5942
url http://dx.doi.org/10.1590/S0100-83582017350100055
http://hdl.handle.net/11449/170110
identifier_str_mv Planta Daninha, v. 35.
0100-8358
10.1590/S0100-83582017350100055
S0100-83582017000100253
2-s2.0-85028994845
S0100-83582017000100253.pdf
9855493448161702
0000-0003-0431-5942
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Planta Daninha
0,365
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.source.none.fl_str_mv Scopus
reponame:Repositório Institucional da UNESP
instname:Universidade Estadual Paulista (UNESP)
instacron:UNESP
instname_str Universidade Estadual Paulista (UNESP)
instacron_str UNESP
institution UNESP
reponame_str Repositório Institucional da UNESP
collection Repositório Institucional da UNESP
repository.name.fl_str_mv Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)
repository.mail.fl_str_mv
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